CN115012325A - Concrete box girder bridge reinforcing scheme based on FRP (fiber reinforced plastic) section bars - Google Patents
Concrete box girder bridge reinforcing scheme based on FRP (fiber reinforced plastic) section bars Download PDFInfo
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- CN115012325A CN115012325A CN202210487463.XA CN202210487463A CN115012325A CN 115012325 A CN115012325 A CN 115012325A CN 202210487463 A CN202210487463 A CN 202210487463A CN 115012325 A CN115012325 A CN 115012325A
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- box girder
- frp
- concrete box
- bridge
- concrete
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 14
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title description 59
- 239000011151 fibre-reinforced plastic Substances 0.000 title description 59
- 230000002787 reinforcement Effects 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a concrete box girder bridge reinforcement scheme based on FRP section, includes concrete box girder, bridge deck pavement layer, concrete box girder bottom FRP section and concrete box girder lateral part FRP section. The concrete box girder is a prefabricated or cast-in-place concrete hollow girder. The bridge deck pavement layer is positioned on the upper part of the concrete box girder; the FRP profiles are spliced and arranged at the bottom and the side of the box girder, are fixed with the box girder by expansion bolts, and are arranged in the span of the bottom of the box girder and arranged on the side of the box girder along the direction of the bridge. The reinforcing scheme of the concrete box girder bridge based on the FRP profiles provided by the invention fully utilizes the advantages of light weight, high strength, corrosion resistance, good designability and the like of FRP materials, effectively reinforces the concrete box girder, improves the integral rigidity and bearing capacity of the bridge on the premise of not increasing the self weight of the bridge, and ensures the safety and reliability of a bridge system.
Description
Technical Field
The invention relates to the field of bridge structure reinforcement in civil engineering, in particular to a concrete box girder bridge reinforcement scheme based on FRP (fiber reinforced plastic) sections.
Background
With the acceleration of the urban modernization process, the urban land is tense, the traffic flow is increased rapidly, and the viaducts and the overpasses are constructed in large quantity to improve the vehicle passing efficiency and greatly relieve the traffic jam. The box-shaped section beam has a box chamber, so that the self weight is light, the space integral stress performance is good, and the section characteristic is excellent, so that the box-shaped section beam can be widely applied to bridge structures.
In many cases, along with the increase of the service life of the box girder bridge, the structural rigidity of the box girder bridge is reduced, the deflection of the box girder bridge is increased, and the safe service life of the structure is influenced due to various reasons; in addition, due to the reasons of increased allowable load of the structure, service property change, standard updating and the like, the existing structure is difficult to meet new requirements, so the bridge is required to be reformed and reinforced, and the safety and durability level of the highway bridge is improved.
At present, in the reinforcement design of a box girder bridge, in order to improve the local unfavorable stress state of the bridge, reduce the number and the width of cracks of a girder body and realize the prolonging of the service life of the structure, the reinforcement scheme comprises a prestress application technology, high-strength materials additionally arranged outside and the like. The prestress reinforcing method is characterized in that prestress reinforcing steel bars or composite material reinforcing steel bars are additionally added among beams, and structural reinforcement is realized through the external force action of a tension area of a prestress tensioning release box beam. The FRP pasting reinforcing method is characterized in that high-performance fiber reinforced composite material cloth is selected and pasted on the surface layer of the box girder, so that the box girder and an original member bear force together, wherein carbon fiber reinforced composite materials (CFRP) are mostly used. But the scheme is only suitable for the conditions that the bridge rigidity is enough and the allowable load of the structure is not changed.
When the integral rigidity of the bridge structure is insufficient or the allowable bearing capacity needs to be improved, the method of externally bonded steel reinforcement or externally coated concrete reinforcement is mostly adopted at present. But because steel is easy to corrode in the air, the later-period maintenance cost is high, the self weight of the structure can be greatly improved by wrapping concrete outside, and the requirement on the lower structure of the reinforced bridge is higher. Therefore, an effective reinforcing scheme is not available at present, and the advantages of corrosion resistance, light dead weight and low later maintenance cost can be considered while the rigidity of the bridge is improved.
Disclosure of Invention
The invention aims to provide a concrete box girder bridge reinforcing scheme based on FRP (fiber reinforced plastic) sections aiming at the defects of the prior art, and the existing problems are solved by utilizing the advantages of light weight, high strength, corrosion resistance, good designability and the like of the FRP sections.
The technical scheme is as follows:
the utility model provides a concrete box girder bridge reinforcement scheme based on FRP section, the structure includes concrete box girder, bridge deck pavement layer, concrete box girder bottom FRP section and concrete box girder lateral part FRP section. The concrete box girder is a prefabricated or cast-in-place concrete hollow girder, and the external section form is one of rectangle, trapezoid and curved edge. The bridge deck pavement layer is positioned on the upper part of the concrete box girder; the FRP profile at the bottom of the concrete box girder is arranged at the mid-span position at the bottom of the box girder, the FRP profile at the side of the concrete box girder is arranged at the side-span position at the side of the box girder, the concrete arrangement length is calculated according to the actual reinforcement requirement, and the profile and the box girder are fixed by expansion bolts.
The FRP section comprises a C-shaped FRP section, an I-shaped FRP section and an I-shaped FRP section with an inclined web plate, the end part of the flange of the section needs to be prefabricated with an outer tenon and an outer mortise, and the section can be spliced into a continuous FRP hollow panel through an adhesive.
In the scheme embodiment of the invention for reinforcing the concrete box girder bridge based on the FRP profiles, the bottom of the box girder is made of C-shaped and I-shaped FRP profiles which are spliced into a continuous FRP hollow panel with a vertical web and mainly used for bearing the tensile load caused by bending moment; the two sides of the box girder are made of C-shaped and web-inclined I-shaped FRP sectional materials which are spliced into a web-inclined continuous FRP hollow panel which is mainly used for bearing shearing load.
According to the reinforcing scheme of the concrete box girder bridge based on the FRP profiles, the FRP profiles are arranged at the bottom and the side parts of the box girder, and the advantages of light weight, high strength, corrosion resistance, good designability and the like of the FRP profiles are utilized to effectively reinforce the concrete box girder bridge, so that the integral rigidity and the bearing capacity of the bridge are improved on the premise of not increasing the self weight of the bridge, and the safety and the reliability of a bridge system are ensured.
Drawings
FIG. 1 is a schematic diagram of the arrangement positions of FRP profiles along the direction of a bridge in the embodiment of the invention.
FIG. 2 is a sectional view of an FRP reinforcing concrete box girder according to an embodiment of the present invention.
FIG. 3 is a detailed view of the type and structure of FRP section in the embodiment of the invention.
Detailed Description
The embodiments of the present invention are not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that can be directly or indirectly applied to other related technical fields using the content of the present specification are included in the scope of the present invention.
The utility model provides a concrete box girder bridge reinforcement scheme based on FRP section, the structure includes concrete box girder 1, bridge deck pavement layer 2, concrete box girder bottom FRP section 3 and concrete box girder lateral part FRP section 4. The concrete box girder 1 is a prefabricated or cast-in-place concrete hollow girder, and the external section form is one of rectangle, trapezoid and curved edge. The bridge deck pavement layer 2 is positioned on the upper part of the concrete box girder 1; the FRP profile 3 at the bottom of the concrete box girder and the FRP profile 4 at the side of the concrete box girder are spliced and respectively arranged at the bottom of the box girder 1 and the side of the box girder 1 and are fixed with the box girder 1 by expansion bolts 5.
In the embodiment of the reinforcing scheme of the concrete box girder bridge based on the FRP profiles, provided by the invention, the FRP profiles 3 at the bottom of the concrete box girder comprise C-shaped FRP profiles 6 and I-shaped FRP profiles 7, and are mainly used for bearing tensile load caused by bending moment; the FRP profiles 4 at the side parts of the concrete box girder comprise C-shaped FRP profiles 6 and I-shaped FRP profiles 8, and are mainly used for bearing shearing load. Outer tenons 9 and outer mortises 10 are prefabricated at the flange end parts of the FRP profiles 3 at the bottom of the concrete box girder and the FRP profiles 4 at the side parts of the concrete box girder, so that the FRP profiles and the outer mortises can be spliced into a continuous FRP hollow panel through adhesives.
When the invention is used, after the quantity of the FRP profiles 3 at the bottom of the concrete box girder and the quantity of the FRP profiles 4 at the side part of the concrete box girder are selected according to the section size of the concrete box girder 1, the C-shaped FRP profiles 6 with the outer tenons 9 are firstly fixed at one side of the box girder through the expansion bolts 5. And then, an I-shaped FRP section 7 or an I-shaped FRP section 8 with an inclined web plate is selected, the outer mortise 10 of the section is spliced with the outer tenon 9 of the fixed section through an adhesive, and the flange on the other side of the section and the box girder 1 are reinforced by adopting an expansion bolt 5. Repeating the work, and finally selecting the C-shaped FRP section with the outer mortise 10 to be bonded with the fixed section through the adhesive to form the closed continuous FRP hollow panel.
Considering that the bending moment of the concrete box girder bridge is larger at the midspan position and the shearing force is larger at the edge-spanning position, the FRP profile 3 at the bottom of the concrete box girder is arranged at the midspan position of the concrete box girder 1 when the bridge is reinforced, the FRP profile 4 at the side of the concrete box girder is arranged at the edge-spanning position of the concrete box girder 1, and the concrete arrangement length is calculated according to the actual reinforcement requirement.
Compared with the existing reinforcing structure, the reinforcing scheme of the concrete box girder bridge based on the FRP profiles fully utilizes the advantages of light weight, high strength, corrosion resistance, good designability and the like of FRP materials, effectively reinforces the concrete box girder 1 by fixing the FRP profiles to the bottom and the side part of the concrete box girder 1 by using the expansion bolts 5, and improves the overall rigidity and the bearing capacity of the bridge on the premise of not increasing the dead weight of the bridge.
Claims (2)
1. The utility model provides a concrete box girder bridge reinforcing scheme based on FRP section bar, includes concrete box girder (1), bridge deck pavement layer (2) are located concrete box girder (1) upper portion, its characterized in that: the box girder comprises a box girder body, and is characterized in that a box girder body bottom FRP section (3) is rigidly connected to the bottom of the box girder body (1), a box girder body side FRP section (4) is rigidly connected to the side of the box girder body (1), the box girder body bottom FRP section (3) comprises a C-shaped FRP section (6) and an I-shaped FRP section (7), and is spliced through an adhesive, and the box girder body side FRP section (4) comprises a C-shaped FRP section (6) and an I-shaped FRP section (8) with an inclined web, and is spliced through an adhesive.
2. The FRP profile-based concrete box girder bridge reinforcement scheme of claim 1, wherein: the FRP profiles (3) at the bottom of the concrete box girder are arranged in the region with larger bending moment in the span of the concrete box girder (1), and the FRP profiles (4) at the side of the concrete box girder are arranged in the region with larger shearing force at the span of the concrete box girder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210487463.XA CN115012325A (en) | 2022-05-06 | 2022-05-06 | Concrete box girder bridge reinforcing scheme based on FRP (fiber reinforced plastic) section bars |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210487463.XA CN115012325A (en) | 2022-05-06 | 2022-05-06 | Concrete box girder bridge reinforcing scheme based on FRP (fiber reinforced plastic) section bars |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009281018A (en) * | 2008-05-21 | 2009-12-03 | Taisei Corp | Reinforcing method for existing concrete structure |
| CN203270434U (en) * | 2013-05-08 | 2013-11-06 | 重庆交通大学 | Prestressed concrete box girder bridge with variable cross section |
| CN104452570A (en) * | 2014-12-05 | 2015-03-25 | 郑州大学 | Combined FRP (Fiber Reinforced Plastic) box-shaped sectional material for structure |
| FR3011864A1 (en) * | 2013-10-10 | 2015-04-17 | Jacques Sarrat | HARDWOOD MATRIX COMPOSITE BEAM IN ALUMINUM EXTRUDE ARMORED WITH FULLY COATED CARBON FIBER PROFILES |
| CN204715227U (en) * | 2015-06-03 | 2015-10-21 | 大连市市政设计研究院有限责任公司 | Case beam ruggedized construction |
| CN106337361A (en) * | 2016-08-29 | 2017-01-18 | 东南大学 | Separated fiber reinforced plastic (FRP)-concrete-steel composite girder bridge structure and construction method thereof |
| CN209276976U (en) * | 2018-12-24 | 2019-08-20 | 河南郑大建筑材料有限公司 | A kind of high shear profile based on FRP |
| CN209989712U (en) * | 2019-05-20 | 2020-01-24 | 苏州中恒通路桥股份有限公司 | Bridge coupling reinforced structure under marine environment |
| CN110904864A (en) * | 2019-12-10 | 2020-03-24 | 中铁大桥（南京）桥隧诊治有限公司 | Steel-concrete combined system for improving bearing capacity of concrete box girder bridge |
| JP2020100976A (en) * | 2018-12-20 | 2020-07-02 | 東日本高速道路株式会社 | Shear reinforcement construction method for pc box girder bridge |
| CN212223609U (en) * | 2020-04-07 | 2020-12-25 | 南京林业大学 | FRP section bar reinforcing steel bridge deck structure |
| JP2021031864A (en) * | 2019-08-19 | 2021-03-01 | 株式会社高速道路総合技術研究所 | Slab reinforcement method of side fastening pc bridge |
| AU2020104338A4 (en) * | 2020-12-24 | 2021-03-18 | Changsha University Of Science And Technology | Steel box girder reinforcement structure and reinforcement method thereof |
| KR20210093112A (en) * | 2020-01-17 | 2021-07-27 | 주식회사 파인씨엔이 | Compound FRP reinforced panel and method forconstructing the bottom slab using the panel |
| CN114215382A (en) * | 2022-01-08 | 2022-03-22 | 西安交通大学 | FRP buckling restrained reinforcement system for circular steel tube and construction method thereof |
| CN217556726U (en) * | 2022-05-06 | 2022-10-11 | 西安交通大学 | Concrete box girder bridge reinforced structure based on FRP section bar |
-
2022
- 2022-05-06 CN CN202210487463.XA patent/CN115012325A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009281018A (en) * | 2008-05-21 | 2009-12-03 | Taisei Corp | Reinforcing method for existing concrete structure |
| CN203270434U (en) * | 2013-05-08 | 2013-11-06 | 重庆交通大学 | Prestressed concrete box girder bridge with variable cross section |
| FR3011864A1 (en) * | 2013-10-10 | 2015-04-17 | Jacques Sarrat | HARDWOOD MATRIX COMPOSITE BEAM IN ALUMINUM EXTRUDE ARMORED WITH FULLY COATED CARBON FIBER PROFILES |
| CN104452570A (en) * | 2014-12-05 | 2015-03-25 | 郑州大学 | Combined FRP (Fiber Reinforced Plastic) box-shaped sectional material for structure |
| CN204715227U (en) * | 2015-06-03 | 2015-10-21 | 大连市市政设计研究院有限责任公司 | Case beam ruggedized construction |
| CN106337361A (en) * | 2016-08-29 | 2017-01-18 | 东南大学 | Separated fiber reinforced plastic (FRP)-concrete-steel composite girder bridge structure and construction method thereof |
| JP2020100976A (en) * | 2018-12-20 | 2020-07-02 | 東日本高速道路株式会社 | Shear reinforcement construction method for pc box girder bridge |
| CN209276976U (en) * | 2018-12-24 | 2019-08-20 | 河南郑大建筑材料有限公司 | A kind of high shear profile based on FRP |
| CN209989712U (en) * | 2019-05-20 | 2020-01-24 | 苏州中恒通路桥股份有限公司 | Bridge coupling reinforced structure under marine environment |
| JP2021031864A (en) * | 2019-08-19 | 2021-03-01 | 株式会社高速道路総合技術研究所 | Slab reinforcement method of side fastening pc bridge |
| CN110904864A (en) * | 2019-12-10 | 2020-03-24 | 中铁大桥（南京）桥隧诊治有限公司 | Steel-concrete combined system for improving bearing capacity of concrete box girder bridge |
| KR20210093112A (en) * | 2020-01-17 | 2021-07-27 | 주식회사 파인씨엔이 | Compound FRP reinforced panel and method forconstructing the bottom slab using the panel |
| CN212223609U (en) * | 2020-04-07 | 2020-12-25 | 南京林业大学 | FRP section bar reinforcing steel bridge deck structure |
| AU2020104338A4 (en) * | 2020-12-24 | 2021-03-18 | Changsha University Of Science And Technology | Steel box girder reinforcement structure and reinforcement method thereof |
| CN114215382A (en) * | 2022-01-08 | 2022-03-22 | 西安交通大学 | FRP buckling restrained reinforcement system for circular steel tube and construction method thereof |
| CN217556726U (en) * | 2022-05-06 | 2022-10-11 | 西安交通大学 | Concrete box girder bridge reinforced structure based on FRP section bar |
Non-Patent Citations (3)
| Title |
|---|
| 周东蕾;曹正喜;焦伟;: "预应力混凝土T形刚构箱梁桥加固方案比选", 隧道建设, no. 05, 20 October 2006 (2006-10-20) * |
| 杨政, 郭万林, 董蕙茹: "FRP板加固钢筋砼梁正截面强度分析", 玻璃钢/复合材料, no. 05, 28 September 2002 (2002-09-28) * |
| 王伟力;宣剑裕;: "混凝土箱梁桥加固措施的探讨", 铁道建筑技术, no. 04, 20 August 2007 (2007-08-20) * |
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